George hayes



2 SheetsSheet I.

(Nd Model.)

G HAYES METALLIC LATHING.

Patented Feb. 4, 1890.

l hw @Mw-3 (No Model.) Y 2 S'heetS-Shet 2.

@HAYES METALLIC LATUNG.

No. 420,661. Y A Patented Febjll, 1890.-

Wfmesmm `1 UNITED STATES PATENT OFFICE.

1 vented a new and useful Metallic Lathing,

METALLIC LATHING.

SPECIFICATION forming part of Letters Patent N o. 420,661, dated February 4, 1890.` Application iledNovemberZ, 1889. Serial No. 328,997. (No modell.) Patented in England October 23, 1888, No. 15,235; in

Belgium October 26, 1888, No. 83,740; in France October 26, in Canada January 23, 1889, No. 30,611. v

To all whom it may oon/cern:

Beit known that I, GEORGE HAYES, a citi` zen of the United States, and a resident of the city, county, and State of New York, have in- (for which I have obtained apatent in Great Britain, October 23, 1888, No. 15,235; in France, October 26, 1888, No. 193,756; in Belgium, October 26, 1888, No. 83,740; in Italy, October 26, 1888, No. 24,317, and in Canada, January 23, 1889, No. 30,611,) of which the following is a specification.

My invention consists of a sheet-metal lathing in sheet or strip provided at near intervals throughout with apertures of peculiar shape, each aperture having been formed by making an incision, in shape a zigzag or assimilating a letter Z, through the sheet in a clean-cut line and (without removing any portion of the metal from the sheet) forcing outwardly the pointed edge metal each side of the cut with a backward bend or roll, leaving the opening of shape approximating at rhomboid, with the edge metal projecting at two sides thereof as tongues, hooks, or barbs to grasp plaster when applied thereto, all as hereinafter more fully described, reference being had to the accompanying drawings, invwhichmA Figure 1 represents a piece of sheet1netal lathing, showing the apertures and projecting tongues. A. diagonal dotted line in the upper lefthand corner aperture shows the position and direction of the initial cut or incision. The apertures here shown are of rhomboidal shape. VEig. 2 is another piece of the sheet-rnetal lat-hing with apertures of rectanguiar shape. Fig. 3 is a similar view of lathing with apertures of rholnboidal shape, each aperture arranged diagonally all in one direction. Fig. 4 is a similar view ot' lathing with apertures like Fig. 3, but arranged alternately in opposite direction. Fig. 5 is a similar view of lathing with apertures like Fig. 2, but arranged to break joint in alternating lines. Fig. G is a perspective view of a small piece of the lathing showing one aperture illustrating shape and manner in which the tongues project. Fig. 7 is a face view of a 1888, No. 198,756; in Italy October 26, 1888, No. 24,317, and

piece ot' lathing with apertures of rhomboid al shape arranged diagonally in alternate lines lengthwise the sheet. Fig. 8 is another face view of a piece of lathing with rhomboidal apertures arranged to run parallel to the edge of the sheet, but breaking joint across the sheet. Fig. 9 is another view of lathing with rhoinboidal apertures4 diagonally arranged and breaking joints in alternate lines across the sheet.

In all the above iigures one of the apertures is shown with a diagonal dotted line across its face, showing the direction of the initial cut.

In the drawings, A indicates the lathing sheet or strip.

B indicates the apertures.

' C indicates the tongues, hooks, or barbs.

D indicates the line of the initial out or incision, and E at one end of the aperture and F at the other end indicate the line of the secondary cuts. Usually in making the openings the die forms the out D, and entering cuts the end cuts E andFduring its progress; but all the three cuts may be made simultaneously. As the die enters it separates the edge metal both sides of the out D, turning the edge metal outward, and with a backward bend or roll, which, after the die has retired, remain standing or projecting as tongues, hooks, or barbs, to grasp plaster when applied to the lathing. Each opening has two of the tongues all throughout the sheet.

It will be readily seen that the cuts combined as one incision form a zigzag line, or approximating a letter Z, or it may be spoken of as serrated.

What I claim as new, and desire to secure by Letters Patent of the United States, is-` 1. A sheet-metal lath having at intervals throughout apertures of rhomboidal shape, each with two-projecting tongues, hooks, or barbs formed of the edge metal turned outward with a backward bend or roll in forming the aperture, essentially as shown and described.

2. A sheet-metal lath having at intervals throughout apertures formed by' cutting through the sheet lon the lines or incisions throughout oblong apertures each having at nvt sides thereof a. tengas., took, urban) of the edge metal turned outward and backx5 Ward from a cut made through the metal diagonally to the end lines of the aperture and connecting them, essentially as shown and described;

GEO. HAYES. Witnesses:

JAMES R. MCAFEE, Giro. A. HAYES. 

